We have seen quite a few cool creations built unsing Lego Mindstorms NXT, and now Dexter Industries is launching a solar module for Lego Mindstorms.
dSolar Systems allow you to power your Lego Mindstorms NXT robot using nothing but the sun! This 9V solar power system is compatible with Lego Mindstorms NXT creations and includes everything you need to get started. Easily attach the solar panel to any of your Mindstorms NXT creations. All systems include dSolar Power Cord and a dSolar NXT Adapter to power your NXT projects.
If you want one, the dSolar add on for Lego Mindstorms is available for $90 from Dexter Industries.
Make via Gizmodo